Физика твердого тела最新文献_第10页

Особенности спектров комбинационного рассеяния света в области линии 2100 cm-=SUP=--1-=/SUP=- углеродными образованиями в тонких градиентных пленках золота 2100 cm-=SUP -= -1-=/SUP -碳形成在薄薄的梯度金薄膜

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.04.55299.19

М. Е. Компан, О.И. Коньков, С. Е. Никитин, В. Г. Малышкин

引用次数: 0

Влияние шероховатости барьерного слоя на формирования наночастиц катализатора роста углеродных нанотрубок 屏障层粗糙度对碳管生长催化剂纳米颗粒形成的影响

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.03.54751.545

С. В. Булярский, А. А. Дудин, К.И. Литвинова, Александр Александрович Павлов, Григорий Александрович Рудаков

{"title":"Влияние шероховатости барьерного слоя на формирования наночастиц катализатора роста углеродных нанотрубок","authors":"С. В. Булярский, А. А. Дудин, К.И. Литвинова, Александр Александрович Павлов, Григорий Александрович Рудаков","doi":"10.21883/ftt.2023.03.54751.545","DOIUrl":"https://doi.org/10.21883/ftt.2023.03.54751.545","url":null,"abstract":"This article compares TiN layers produced by electron beam evaporation (EBE) and atomic layer deposition (ALD) for the effect of barrier layer deposition technology on the formation of carbon nanotube (CNT) growth catalyst nanoparticles. The layers obtained by EBE have a roughness 1.5 times higher than the layers deposited by the ALD method (Ra = 1 nm and Ra = 0.6 nm). Nanoparticles formed on the surface of the EBE layer are characterized by a large average size (about 30 nm) and a 1.3 times greater dispersion of the distribution compared to nanoparticles formed on the ALD layer. TiN layers obtained by EBE are characterized by better surface wettability in comparison with ALD layers. The contact angle for catalyst nanoparticles on the surface of the EBE layer of TiN is about 30 degrees and approaches 90 degrees for ALD layers. Catalyst spreading is due to the Wenzel model. It is shown that the higher surface roughness of the EBE samples is associated with the crystallization of TiN, since the layer formation process proceeds at a higher temperature compared to the ALD process. For this reason, the use of barrier layers obtained by the ALD method is preferable for the formation of CNT growth catalyst nanoparticles on their surface.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90967418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Изменение температуры плавления металлов с ростом давления 金属熔点随压力升高而变化

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.05.55489.46

Магомед Нуцалавович Магомедов

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Субмонослойные покрытия натрия на поверхности золотой пленки 金箔表面的亚单层钠涂层

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.09.56242.115

П.А. Дементьев, Е. В. Дементьева, М. Н. Лапушкин, С.Н. Тимошнев

{"title":"Субмонослойные покрытия натрия на поверхности золотой пленки","authors":"П.А. Дементьев, Е. В. Дементьева, М. Н. Лапушкин, С.Н. Тимошнев","doi":"10.21883/ftt.2023.09.56242.115","DOIUrl":"https://doi.org/10.21883/ftt.2023.09.56242.115","url":null,"abstract":"n situ photoelectron spectroscopy studies have been carried out in ultrahigh vacuum of the electronic structure of a 2D Au film deposited on a surface W with a natural oxide, before and after adsorption of Na atoms. The spectra of photoemission from the valence band and core levels of Au 4f, W 4f and Na 2p were studied under synchrotron excitation in the photon energy range of 120-300 eV. The investigated 2D Au film with a thickness of 0.83 nm has a valence band close to the valence band of the massive sample. The diffusion of Na atoms deep into the gold film was not detected, which indicates the layered growth of the 2D Au film. Two states have been found: Nadelta+ and Na+, which exist even with a 0.15 sodium coating of the monolayer, which indicates the formation of Na islands and single adsorption of Na atoms. The density functional method is used to calculate the electronic structure of a 2D Au layer without and with adsorbed Na. It is established that the adsorption of Na atoms in the pit or bridge position is preferable. It is found that the adsorption of Na leads to the reconstruction of the surface.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81245099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Влияние упруго-напряженного состояния интерфейсов на магнитоэлектрические свойства слоистых структур ферромагнетик/сегнетоэлектрик 弹性-应力状态对层结构磁电化特性的影响

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.06.55659.27h

С. А. Шарко, А. И. Серокурова, Н. Н. Новицкий, Н. Н. Поддубная, В. А. Кецко, А. И. Стогний

引用次数: 0

Процессы структурообразования в фуллереновых смесях

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.01.53940.501

Рамиль Миннегаязович Хуснутдинов, Регина Радиевна Хайруллина

{"title":"Процессы структурообразования в фуллереновых смесях","authors":"Рамиль Миннегаязович Хуснутдинов, Регина Радиевна Хайруллина","doi":"10.21883/ftt.2023.01.53940.501","DOIUrl":"https://doi.org/10.21883/ftt.2023.01.53940.501","url":null,"abstract":"Glass formation processes in condensed matter are characterized by some specific short-range order changes in the arrangement of particles (atoms/molecules/ions). So, the short-range structural order in supercooled liquids and glasses is characterized by fivefold symmetry in the arrangement of particles, often referred to as icosahedral (ideal or distorted) short-range order. This article is devoted to the study of local structural features of the supercooled melt of the A20B80 fullerene mixture (where A = C60 and B = C70) obtained under various cooling protocols in order to elucidate the mechanism of formation of the icosahedral short-range order in binary molecular liquids. Comprehensive studies of the properties of a fullerene mixture melt were carried out using large-scale molecular dynamics simulations followed by structural and cluster analysis. The crystallization temperature and the critical glass transition temperature of the system were calculated to be Tm ≈ 1439 K and Tc ≈ 1238 K, respectively. It has been established that the crystallization of a binary fullerene mixture proceeds according to the polycrystalline scenario with the formation of clusters with fcc and hcp symmetries. It is shown that in a supercooled fullerene mixture, the short-range icosahedral order is formed by an insignificant number of ideal icosahedral clusters and a certain set of distorted icosahedral clusters, the fraction of which remains practically unchanged at temperatures below the critical glass transition temperature.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76825696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Фазовый состав, кристаллическая структура, диэлектрические и сегнетоэлектрические свойства тонких пленок Ba-=SUB=-2-=/SUB=-NdFeNb-=SUB=-4-=/SUB=-O-=SUB=-15-=/SUB=-, выращенных на подложке Si(001) в атмосфере кислорода 薄膜b- 2-= -2-= -4-= -O- 15-= =SUB -15-= =SUB -15-在氧气底座上生长的

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.04.55295.13

Анна Владимировна Павленко, Татьяна Сергеевна Ильина, Д. А. Киселев, Д.В. Стрюков

{"title":"Фазовый состав, кристаллическая структура, диэлектрические и сегнетоэлектрические свойства тонких пленок Ba-=SUB=-2-=/SUB=-NdFeNb-=SUB=-4-=/SUB=-O-=SUB=-15-=/SUB=-, выращенных на подложке Si(001) в атмосфере кислорода","authors":"Анна Владимировна Павленко, Татьяна Сергеевна Ильина, Д. А. Киселев, Д.В. Стрюков","doi":"10.21883/ftt.2023.04.55295.13","DOIUrl":"https://doi.org/10.21883/ftt.2023.04.55295.13","url":null,"abstract":"The phase composition, nanostructure, and properties of Ba2NdFeNb4O15/Si(001) multiferroic thin films have been studied by X-ray diffraction analysis, scanning probe microscopy, and capacitance-voltage characteristics analysis. The RF cathode sputtering in an oxygen atmosphere was used for films fabrication. It has been found that the obtained Ba2NdFeNb4O15 films are single-phase, impurity-free, polycrystalline textured (c-oriented), and the out-of-plane strain is 0.8%, which leads to the presence of ferroelectric properties at room temperature. It is shown that the surface roughness of the films is ~ 15.39 nm, the lateral size of the crystallites is ~ 134 nm, and the relative permittivity in the temperature range of -190…150 °C is 95-130. The reasons for the revealed regularities are discussed.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"131 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79632353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Аморфный лед средней плотности, полученный разложением водно-гелиевого геля 氦凝胶分解产生的平均密度无定形冰

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.08.56147.103

Виталий Витальевич Синицын, О.Г. Рыбченко, В.Б. Ефимов, А А Вирюс

{"title":"Аморфный лед средней плотности, полученный разложением водно-гелиевого геля","authors":"Виталий Витальевич Синицын, О.Г. Рыбченко, В.Б. Ефимов, А А Вирюс","doi":"10.21883/ftt.2023.08.56147.103","DOIUrl":"https://doi.org/10.21883/ftt.2023.08.56147.103","url":null,"abstract":"The article presents experimental studies of structural changes that occur during heating of nanosized powders of amorphous ice obtained by decay of a water-helium gel. Thermal annealing of the obtained samples was carried out by short exposures (about 15 minutes) at different temperatures in the range of 110-230K. The behavior of the amorphous phase during annealing was analyzed within the framework of its description by a mixture of amorphous ices of low and medium density (LDA and MDA, respectively). It was found that at the such description, the virgin sample was predominantly in the MDA state, while the proportion of the LDA phase was about 7 times less (MDA/LDA ≈ 7:1). It has been established that during annealing, a multistage process of structural transformations of the initial LDA + MDA sample takes place: from initial changes in the amorphous state at 110 K through crystallization of the cubic ice phase Ic with its intensive growth at a temperature of 130 K to the transformation of cubic ice into the hexagonal phase Ih in the temperature range T =135÷230K.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78119827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Катастрофическое разрушение углеродных нанотрубок при деградации автоэлектронных эмиттеров 自动电子发射器退化对碳纳米管的灾难性破坏

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.05.55507.40

С. В. Булярский, А. А. Дудин, А. В. Лакалин, А. П. Орлов

{"title":"Катастрофическое разрушение углеродных нанотрубок при деградации автоэлектронных эмиттеров","authors":"С. В. Булярский, А. А. Дудин, А. В. Лакалин, А. П. Орлов","doi":"10.21883/ftt.2023.05.55507.40","DOIUrl":"https://doi.org/10.21883/ftt.2023.05.55507.40","url":null,"abstract":"Моделируется катастрофическая деградация эмиссионных катодов на основе углеродных нанотрубок, которая происходит из-за разрушения нанотрубки в дефектной области в результате перегрева. Модель учитывает разогрев нанотрубки путем выделения тепла Джоуля, а также радиационное излучение и охлаждение вследствие эффекта Нотингема, заключающегося в уменьшении температуры эмитирующего конца за счет энергии, уносимой потоком эмитированных электронов. Предложенная модель сравнивается с экспериментом по деградации одиночной нанотрубки. Эксперимент подтверждает катастрофическое разрушение и показывает, что разрушению способствует возникновение термоэлектронной эмиссии, которая вызывает быстрый рост тока и, соответственно, температуры дефектной области нанотрубки. Ключевые слова: автоэлектронные эмиттеры, деградация, разогрев нанотрубки, дефекты, катастрофическое разрушение.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84750071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Влияние наночастиц карбида гафния на эмиссионные свойства квази-2D-графен/нанотрубной пленки: исследование из первых принципов 碳化物加菲尼亚纳米颗粒对准-2D-石墨烯/纳米管胶片发射特性的影响:第一原则的研究

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.08.56163.121

О. Е. Глухова, М. М. Слепченков

引用次数: 0